Method of heating liquids.



No. 775,788. PATENTED NOV. 22, 1904. A. WALDBAUR.

METHOD OF HEATING LIQU IDS. APPLICATION FILED AUG.10, 1901.

H0 MODEL.

UNITED STATES Patented November 22, 1904.

ADOLF WALDBAUR, OF STUTTGART, GERMANY.

METHOD OF HEAT ING LIQUIDS.

SPECIFICATION forming part of Letters Patent N 0. 775,788, datedNovember 22, 1904 Application filed August 10, 1901.

To all whom, it may concern.-

- Be it known that I, ADOLF WALDBAUR,acitizen of the German Empire,residing at Stuttgart, Kingdom of Wiirtemberg, Germany, have inventedcertain new and useful Improv'ements in the Methods of Heating Liquids;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same. w

The present invention .relates to the-art of heating liquids. V

The object of the said invention is to heat liquids in such a way as toutilize the calories of the heating agency in the most simple andinexpensive manner.

For this purpose my invention consists in introducing or injecting theflame or flames or products of combustion from a source of flame orburner directly into a moving body of liquid to be heated, said liquidtraveling in the same direction as the flames or products of combustion.

My invention also consists in creating a d raft or suction forintensifying the heat of the flameor flames and inducing a perfectcombustion, said draft or suction being preferably created by theinjection of the liquid into the liquidheating chamber or pipe, whichfor this purpose is introduced into said chamber or pipe in the form offine jets or sprays or sheets, or, in a word, fine streams of liquid.

By this new method of heating I have found that I am enabled to heat acomparatively large volume of liquid, such as water, in a very shortspace of time, the entire heat of the injected flame or products ofcombustion, or both, being almost entirely absorbed by the liquid.Moreover, under my process it has been shown in practice that no odor ortaste of the gas employed is imparted to the liquid. The combustion isquite perfect, so that practically only watery vapor and carbon dioxidare produced.

This process is particularly useful for heating water for cooking,bathing, drinking, and industrial purposes, and is particularly advan-Serial No. 71,586. (No specimens.)

tageous where it is desired to have a heating apparatus which can be putinto and out of operation at the shortest possible notice. In fact, ithas been found that water can be heated by my novel method almost asfast as the watersupply is turned on and that any stated quantity of hotwater can be thus furnished quickly on demand.

In the accompanying drawings Ihave represented an apparatus whereby myprocess may be carried out, it being understood that the said processmay be carriedout by other apparatus and is not confined toanyparticular form of such apparatus.

In the drawings, Figure 1 represents a side elevation of a water-heatingapparatus embodyingmy invention; Fig. 2, a vertical longitudinal centralsection of the same, on an enlarged scale; Fig. 3, a transverse sectionon line 00 a, Fig. 2; Fig. 4, a top plan view of the same.

It will be observed that the water-heating apparatus represented in thedrawings consists of a heating-pipe 0, having a conical or flaringenlargement b, to which is joined a water-pipe vh, provided with anysuitable cock or regulating device 6. .Into this conical enlargement bis fitted in any suitable wayfor example, by a screw-joint, as shownasimilarly-conical flue 0, the enlargement Z) and deflector 0 being soshaped and arranged that only a very thin annular space for the passageof the water to the heating-pipe a is-left.

A Bunsen gas-burner consisting of one or a number of gas-jets 01 extendsinto the rear end of the flue 0, these burners in the present instancebeing secured to and deriving their gas-supply from a common gas-chambere,

which gas-chamber in turn communicates with having a number ofair-openings 7a for furnishing the air-supply to the Bunsen burner. Eachindividual jet d of the gas-burner is, as shown, made in the usual formof a Bunsen burner having the usual air-openings d.

In operation, the gas-burner being lighted in the usual manner and thecock i being operated to the desired extent, the water proceeds to fiowthrough the narrow annular space into the heating-pipe a in thedirection of the arrow 1, thereby creating a draft or suction in themanner well known in injectors. Thereby the air of combustion is drawnwith such force and speed through the airopenings k and J as to create aflame or flames of great intensity and heat, which flames and the heatedproducts of combustion therefrom are forcibly injected in the directionof the arrow 2 into the water as it passes through the heating-pipe (0,thereby quickly heating the same and giving off practically all of theirheat to the water. Since under these conditions the combustion iscomplete, no gas odor or taste is imparted to the water, the carbondioxid generated in combustion being readily dissipated and driven outduring its passage to the vessel of use. By this operation water may beheated for drinking, cooking, bathing, and other purposes in anexceedingly short time, and, as noted from the above, the means foreflecting the result are of such very simple nature that an eX-ceedingly light and inexpensive, and, if clesired, portable apparatusmay be made under my invention for heating water for various purposes.

The amount of water to be heated in a certain time and the temperatureto be imparted to the same may be nicely regulated by properly turning,the gas-cock g or the water-cock 2', or both. A further regulating meansfor this purpose is embodied in the water-cock 0, arranged in thesubsidiary water-pipe 01.

While I have hereinabove described an apparatus for carrying my novelprocess into efl'ect, I do not herein claim any portion of saidapparatus, since the same has been made the basis of claims forming partof my application Serial No. 71,585,1iled concurrently herewith, theclaims of the present application being directed to the process hereindescribed.

It will be noted from the above that under my invention the flames orproducts of combustion are directly injected into the liquid to beheated and that the introduction of the liquid in contracted sprays orjets creates a forced draft or suction, whereby the heat of the flamesis intensified and the fuel is completely consumed.

WVhat I claim. and desire to secure by Letters Patent of the UnitedStates, is

l. The method of heating liquids, which consists in injecting the liquidunder pressure into an open heating-chamber along with a gaseous heatingmedium, and by the injector action of the liquid controlling the flow ofthe heating medium.

2. The method of heating liquids, which consists in introducing theheated products of combustion to a heating-chamber, injecting the liquidinto the receptacle under pressure along with the products ofcombustion, and controlling the flow of the products of combustion bythe flow of the liquid.

In testimony whereof I aflix my signature in presence of two witnesses.

ADOLF WVALDBA UR.

l/Vitnesses:

WALTER SOHWARBEOH, JULIUs HEIM.

